True or False: Light and sound waves can travel through a vacuum. If false, explain why.
False, light can travel through a vacuum. Sound needs a medium so the particles can vibrate to transfer the sound energy.
What 2 factors affect the energy of a wave?
frequency, amplitude
What is a a material through which a wave travels?
medium
What causes sound?
Particles vibrating
What is the most important reason for creating sound proof walls in a recording studio. (What will the walls do with the sound waves?)
absorb sound
What are waves the require a medium (such as sound)?
mechanical waves
What is the bouncing back of a light wave after it hits a surface?
reflection
The higher the frequency, the (higher, lower) the frequency level.
Higher
What causes the pitch of a sound to be higher?
A. Sound waves are vibrating less.
B. Sound waves are more compressed.
C. Sound waves are amplified less.
D. Sound waves are more spread out.
B. Sound waves are more compressed.
As wave amplitude increases, the energy of the wave...
also increases.
Label the whole wave image below correctly.

compression
rarefaction
crest
amplitude
wavelength
trough
What is the measure of how high or how low a wave sounds?
Pitch
Which of the following is not an electromagnetic wave?
A. gamma ray
B. sound wave
C. radio wave
D. x-ray
E. microwaves
B. sound wave
Which of the following is the best example of sound waves being reflected?
A. The sound of a distant train getting louder as it approaches an observer.
B. Water in a glass vibrating because of the sound of thunder.
C. A noise that produces an echo when it bounces off a distant wall.
D. Hearing music being played by a neighbor's stereo through a wall.
C. A noise that produces an echo when it bounces off a distant wall.